6 Best Car Horn For Loudness 2018 Loudest Car Horns.
It is a compressor based car horn water resistant that has a compact design to fit in all locations under the bonnet. This car horn is one of the best compact horn for loudness and better yet it can be installed to any vehicle with a 12 volt system. That vehicle being anything from a car, truck, motorcycle, ATV or even a boat.

How To Make Your Car Sound Like a Freight Train.
Horns from any big car will do, but if you're' the type who'll' settle for nothing less than the best, go for the four-note train horn from an old Cadillac or Buick. GM's' two-note horns were loud, and the four-note setup ridiculously loud.